Response of carbon emissions from invasive plant alligator weed(Alternanthera philoxe-roides)to nitrogen and phosphorus input in different habitats
Alligator weed(Alternanthera philoxeroides)is an invasive plant,which could invade both aquatic and terrestrial habitats.In the present study,by using the microcrosmio technique,different nitrogen(N),phosphorus(P)addition levels were set to simulate nutrient input in different habitats(aquatic and terrestrial),and the emis-sions of carbon-containing greenhouse gases such as methane(CH4)and carbon dioxide(CO2),and biomass carbon sequestration were observed in the system,to explore the response of carbon emission from alligator weed to N and P input in different habitats.The results showed that the carbon emission was mainly CO2 emission other than CH4.In the aquatic habitats,there were mainly carbon sinks,and the N,P addition could promote the carbon sink;while in terrestrial habitats there were carbon emissions,and the N,P input could promote the carbon emissions.Thus,the invasive habitats,as well as the nutrients input status of the invasive site,should be fully considered for the accurate assessment of carbon emissions of alligator weed.
万方数据
维普
